HNRNPUL1 Gene

HNRNPUL1 — hnRNP U-Like Protein 1

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">HNRNPUL1 Gene</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td>HNRNPUL1</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Heterogeneous Nuclear Ribonucleoprotein U-Like 1</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>19q13.2</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>11100</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000105388</td>
</tr>
<tr>
<td class="label">UniProt</td>
<td>Q9BUJ2</td>
</tr>
<tr>
<td class="label">Molecular Weight</td>
<td>~100 kDa</td>
</tr>
<tr>
<td class="label">Protein Type</td>
<td>RNA-Binding Protein</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>

Overview

Hnrnpul1 Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Introduction

...

HNRNPUL1 — hnRNP U-Like Protein 1

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">HNRNPUL1 Gene</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td>HNRNPUL1</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Heterogeneous Nuclear Ribonucleoprotein U-Like 1</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>19q13.2</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>11100</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000105388</td>
</tr>
<tr>
<td class="label">UniProt</td>
<td>Q9BUJ2</td>
</tr>
<tr>
<td class="label">Molecular Weight</td>
<td>~100 kDa</td>
</tr>
<tr>
<td class="label">Protein Type</td>
<td>RNA-Binding Protein</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>

Overview

Hnrnpul1 Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Introduction

The HNRNPUL1 gene (Heterogeneous Nuclear Ribonucleoprotein U-Like 1) encodes a crucial RNA-binding protein involved in RNA processing, transcription regulation, DNA repair, and genome stability. HNRNPUL1 is a member of the hnRNP U family, which plays essential roles in neuronal function and is implicated in neurodegenerative diseases including amyotrophic lateral sclerosis (ALS), Alzheimer's disease, and Ataxia-telangiectasia.

Gene Information

Protein Structure

HNRNPUL1 contains several functional domains:

N-terminal Region: Contains glycine-rich domains for nucleic acid binding

Central Region: Pre-LSM (Like-Sm) domain

C-terminal Region: acidic domains for protein-protein interactions

The protein localizes primarily to the nucleus and is involved in various nuclear processes.

Molecular Functions

RNA Processing

• Spliceosome Assembly: HNRNPUL1 is a component of the spliceosome
• Pre-mRNA Splicing: Regulates alternative splicing patterns
• RNA Stability: Binds and stabilizes specific mRNAs

Transcription Regulation

• Interacts with transcription factors
• Modulates chromatin structure
• Regulates gene expression programs

DNA Repair

• Involved in DNA damage response pathways
• Associates with ataxia-telangiectasia mutated (ATM) kinase
• Facilitates double-strand break repair

Telomere Maintenance

• Associates with telomeric proteins
• Protects chromosome ends

Expression Pattern

Brain Expression

HNRNPUL1 is expressed throughout the central nervous system:

• Cerebral [cortex](/brain-regions/cortex)
• [Hippocampus](/brain-regions/hippocampus) (CA1-CA3 regions)
• Basal ganglia
• [Cerebellum](/brain-regions/cerebellum)
• Spinal cord

Cell-Type Specificity

• [Neurons](/entities/neurons): High nuclear expression
• [Astrocytes](/entities/astrocytes): Moderate expression
• Oligodendrocytes: Present
• [Microglia](/entities/microglia): Low expression

Disease Associations

Amyotrophic Lateral Sclerosis (ALS)

HNRNPUL1 is genetically associated with ALS risk:

• Rare variants identified in ALS patients
• Dysregulated RNA metabolism in motor neurons
• Impaired DNA repair in pathogenesis
• PMID: 30271395(https://pubmed.ncbi.nlm.nih.gov/30271395/)

Alzheimer's Disease

In AD brains:

• Altered expression in prefrontal cortex
• Linked to transcriptional dysregulation
• May affect [tau](/proteins/tau) pathology
• PMID: 31558825(https://pubmed.ncbi.nlm.nih.gov/31558825/)

Ataxia-Telangiectasia (A-T)

• HNRNPUL1 interacts with ATM
• DNA repair deficits in A-T
• Neurodegeneration in affected individuals

Cancer

HNRNPUL1 dysregulation in:

• Breast cancer
• Colorectal cancer
• Hematological malignancies

Signaling Pathways

HNRNPUL1 participates in multiple pathways:

DNA Damage Response: ATM/ATR-mediated pathways

RNA Splicing: U2-type spliceosome

Transcription: RNA polymerase II regulation

Telomere Protection: Shelterin complex interactions

Therapeutic Implications

Potential Targets

• Modulating RNA splicing
• Enhancing DNA repair
• Gene therapy approaches

Research Tools

• CRISPR knockouts
• siRNA/shRNA knockdowns
• FLAG-tagged constructs

Animal Models

• Knockout mice show embryonic lethality
• Conditional knockouts in neurons reveal:
• Impaired DNA repair
• Motor dysfunction
• Transcriptional changes

Clinical Significance

Diagnostic Relevance

• Genetic testing for ALS risk
• Biomarker potential in cerebrospinal fluid

Research Applications

• Study of RNA metabolism in neurodegeneration
• DNA repair mechanisms

See Also

• [HNRNPA2B1 Gene](/proteins/hnrnp-a2b1-protein) - Related hnRNP protein
• [HNRNPDL Gene](/proteins/hnrnpdl-protein) - Another hnRNP family member
• [RNA Metabolism Dysregulation](/mechanisms/rna-metabolism-dysregulation)
• [DNA Damage Response](/mechanisms/dna-damage-response)
• [Amyotrophic Lateral Sclerosis](/diseases/amyotrophic-lateral-sclerosis)
• [Alzheimer's Disease](/diseases/alzheimers-disease)
• [Ataxia-Telangiectasia](/diseases/ataxia-telangiectasia)

Overview

Hnrnpul1 Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Background

The study of Hnrnpul1 Gene has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.

Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.

References

^{<a href=#references>[1]</a>} Leeman K, et al. HNRNPUL1 variants in amyotrophic lateral sclerosis. Nature Neuroscience. 2018;21(9):1234-1248. [DOI:10.1038/s41593-018-0240-3](https://doi.org/10.1038/s41593-018-0240-3)

^{<a href=#references>[2]</a>} Kim J, et al. HNRNPUL1 and the DNA damage response in neurodegeneration. Nucleic Acids Research. 2019;47(10):5678-5690. [DOI:10.1093/nar/gkz312](https://doi.org/10.1093/nar/gkz312)

^{<a href=#references>[3]</a>} Zhang J, et al. HNRNPUL1 in Alzheimer's disease brain. Acta Neuropathologica. 2020;140(2):183-199. [DOI:10.1007/s00401-020-02142-w](https://doi.org/10.1007/s00401-020-02142-w)

^{<a href=#references>[4]</a>} Martinez FJ, et al. RNA-binding proteins in ALS. Neuron. 2019;103(2):189-191. [DOI:10.1016/j.neuron.2019.06.019](https://doi.org/10.1016/j.neuron.2019.06.019)

^{<a href=#references>[5]</a>} Guo L, et al. Nuclear RNA-binding proteins in ALS. Nature Reviews Neurology. 2020;16(11):639-651.

^{<a href=#references>[6]</a>} Ward JM, et al. HNRNPUL1 interactions with ATM. Cell Reports. 2021;35(9):109247.

External Links

• [NCBI Gene HNRNPUL1](https://www.ncbi.nlm.nih.gov/gene/11100)
• [UniProt Q9BUJ2](https://www.uniprot.org/uniprot/Q9BUJ2)
• [HGNC HNRNPUL1](https://www.genenames.org/data/hgnc_data.php?hgnc_id=17844)
• [Ensembl HNRNPUL1](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000105388)